Best high end am3+, i5 LGA 1150, i7 LGA1550 cpu

[cheezyrocks]

I am currently planning on upgrading my computer. Right now I have a Asus M5A99FX pro r2.0 AM3+ motherboard with an amd fx-4130 that is due for a major upgrade. The motherboard is still completely fine so if I was to go the amd route again I would not be replacing it, and sticking with the am3+ socket and just getting an am3+ cpu. But if I plan to go with intel I also have access to a MSI gaming Z97 LGA 1150 Intel Z97. So, I'm wondering what are my best options for both amd am3+ cpus, as well as intel lga 1150 i5s or i7s, considering the fact that I am going for a high end gaming pc build and I am planning to go with an R9 390x graphics card? No need for a discussion on which route to take, I just want to know what my options are. Thank you!

 

[Emerald]

Intel:
i7-4790K
i5-4690K

AMD:
FX-8370 with BIOS v2501